<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <select>
            <option>选择省</option>
        </select>
        <select>
            <option>选择城市</option>
        </select>
        <select>
            <option>选择区县</option>
        </select>
    </div>

</body>
<script>
    new Vue({
        el: "#app",
        data: {
            list: [{ id: 1, name: "湖北", list: [{ id: 11, name: "武汉", list: [{ id: 111, name: "江夏" }, { id: 112, name: "洪山" }] }, { id: 12, name: "荆州", list: [{ id: 121, name: "沙市" }, { id: 122, name: "松滋" }] }] }, { id: 2, name: "河南", list: [{ id: 21, name: "郑州", list: [{ id: 211, name: "新郑" }, { id: 212, name: "紫金" }] }, { id: 22, name: "洛阳", list: [{ id: 221, name: "洛阳的区一" }, { id: 222, name: "洛阳的区二" }] }] }]
        }
    })

</script>

</html>